Flag Day commemorates the adoption of the flag of the United States, which happened on June 14, 1777, by resolution of the Second Continental Congress. The U.S. Army also celebrates its birthday on this date. The Flag Day CSR Charity & Philanthropy team building event is an extraordinary way to build stronger team connection while giving back to men and women who serve our nation in the Army here and around the world. Your team will create special care packages which will serve as a token of appreciation and a symbol of gratitude.